Watches with a 21 mm lug width

Reference Collection Case Dial Movement Water resistance Produced
Omega 215.30.44.21.03.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / Blue / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel Blue Automatic 8900 600 m 2016
Omega 215.30.44.21.03.003 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / Blue / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel Blue Automatic 8900 600 m 2020
Omega 215.30.44.21.04.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / White / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel White Automatic 8900 600 m 2019
Omega 215.30.44.22.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer GMT Stainless Steel / Black White / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8906 600 m 2016
Omega 215.32.43.21.04.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / White / America's Cup Seamaster Planet Ocean 43.5 mm Stainless Steel White Automatic 8900 600 m 2020
Omega 215.32.44.21.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / Orange / Rubber Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8900 600 m 2016
Omega 215.32.44.21.04.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / White / NATO Seamaster Planet Ocean 43.5 mm Stainless Steel White Automatic 8900 600 m 2019
Omega 215.33.44.21.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / Black / Alligator Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8900 600 m 2016
Omega 215.33.44.21.03.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Stainless Steel / Blue / Alligator Seamaster Planet Ocean 43.5 mm Stainless Steel Blue Automatic 8900 600 m 2016
Omega 215.33.44.22.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer GMT Stainless Steel / Black White / Alligator Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8906 600 m 2016
Omega 215.63.44.21.03.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Sedna Gold / Blue / Strap Seamaster Planet Ocean 43.5 mm Sedna Gold Blue Automatic 8901 600 m 2016
Omega 215.90.44.21.99.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Titanium / Grey / Bracelet Seamaster Planet Ocean 43.5 mm Titanium Grey Automatic 8900 600 m 2016
Omega 215.92.44.21.99.001 Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Titanium / Grey / Rubber Seamaster Planet Ocean 43.5 mm Titanium Grey Automatic 8900 600 m 2016
Omega 220.10.43.22.03.001 Seamaster Aqua Terra 150M Master Chronometer 43 Worldtimer Stainless Steel / Blue / Bracelet Aqua Terra 43 mm Stainless Steel Blue Automatic 8938 150 m 2019
Omega 220.12.43.22.03.001 Seamaster Aqua Terra 150M Master Chronometer 43 Worldtimer Stainless Steel / Blue / Rubber Aqua Terra 43 mm Stainless Steel Blue Automatic 8938 150 m 2019
Omega 220.50.43.22.02.001 Seamaster Aqua Terra 150M Master Chronometer 43 Worldtimer Sedna Gold / Silver / Bracelet Aqua Terra 43 mm Sedna Gold Silver Automatic 8939 150 m 2019
Omega 220.53.43.22.02.001 Seamaster Aqua Terra 150M Master Chronometer 43 Worldtimer Sedna Gold / Silver / Alligator Aqua Terra 43 mm Sedna Gold Silver Automatic 8939 150 m 2019
Omega 220.93.43.22.99.001 Seamaster Aqua Terra 150M Master Chronometer 43 Worldtimer Platinum / Enamel / Alligator Aqua Terra 43 mm Platinum Silver Automatic 8939 150 m 2017
Omega 231.10.43.22.01.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Black / Bracelet Aqua Terra 43 mm Stainless Steel Black Automatic 8601 150 m
Omega 231.10.43.22.02.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar Stainless Steel / Silver / Bracelet Aqua Terra 43 mm Stainless Steel Silver Automatic 8601 150 m 2010–2013
Omega 231.10.43.22.02.003 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Silver / Bracelet Aqua Terra 43 mm Stainless Steel Silver Automatic 8601 150 m
Omega 231.10.43.22.03.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Blue / Bracelet Aqua Terra 43 mm Stainless Steel Blue Automatic 8601 150 m
Omega 231.10.43.22.06.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar Stainless Steel / Grey / Bracelet Aqua Terra 43 mm Stainless Steel Grey Automatic 8601 150 m 2010–2013
Omega 231.13.43.22.01.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Black Aqua Terra 43 mm Stainless Steel Black Automatic 8601 150 m
Omega 231.13.43.22.02.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar Stainless Steel / Silver Aqua Terra 43 mm Stainless Steel Silver Automatic 8601 150 m 2010–2013
Omega 231.13.43.22.02.002 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar Stainless Steel / Silver Aqua Terra 43 mm Stainless Steel Silver Automatic 8601 150 m 2010–2013
Omega 231.13.43.22.02.003 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Silver Aqua Terra 43 mm Stainless Steel Silver Automatic 8601 150 m
Omega 231.13.43.22.03.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Blue Aqua Terra 43 mm Stainless Steel Blue Automatic 8601 150 m
Omega 231.13.43.22.06.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar Stainless Steel / Grey Aqua Terra 43 mm Stainless Steel Grey Automatic 8601 150 m 2010–2013
Omega 231.20.43.22.06.001 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Red Gold / Grey / Bracelet Aqua Terra 43 mm Red Gold, Stainless Steel Grey Automatic 8601 150 m 2010–2013
Omega 231.20.43.22.06.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Red Gold / Grey / Bracelet Aqua Terra 43 mm Red Gold, Stainless Steel Grey Automatic 8601 150 m
Omega 231.23.43.22.06.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Stainless Steel / Red Gold / Grey Aqua Terra 43 mm Red Gold, Stainless Steel Grey Automatic 8601 150 m
Omega 231.50.43.22.01.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar White Gold / Grey / Bracelet Aqua Terra 43 mm White Gold Grey Automatic 8601 150 m 2010–2013
Omega 231.50.43.22.02.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Red Gold / Silver / Bracelet Aqua Terra 43 mm Red Gold Silver Automatic 8611 150 m
Omega 231.50.43.22.06.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar Red Gold / Grey / Bracelet Aqua Terra 43 mm Red Gold Grey Automatic 8611 150 m 2010–2013
Omega 231.50.43.22.06.003 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Red Gold / Grey / Bracelet Aqua Terra 43 mm Red Gold Grey Automatic 8611 150 m
Omega 231.53.43.22.01.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar White Gold / Grey Aqua Terra 43 mm White Gold Grey Automatic 8611 150 m 2010–2013
Omega 231.53.43.22.02.002 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Red Gold / Silver Aqua Terra 43 mm Red Gold Silver Automatic 8601 150 m
Omega 231.53.43.22.06.001 Seamaster Aqua Terra 150m Co-Axial 43 Annual Calendar Red Gold / Grey Aqua Terra 43 mm Red Gold Grey Automatic 8611 150 m 2010–2013
Omega 231.53.43.22.06.003 Seamaster Aqua Terra 150M Co-Axial 43 Annual Calendar Red Gold / Grey Aqua Terra 43 mm Red Gold Grey Automatic 8611 150 m
Omega 232.30.44.22.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Stainless Steel / Black / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8605 600 m 2014–2016
Omega 232.30.44.22.01.002 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Stainless Steel / Orange Numerals / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8605 600 m 2014–2016
Omega 232.30.44.22.01.003 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Stainless Steel / Orange Numerals / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8605 600 m
Omega 232.30.44.22.03.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Stainless Steel / GoodPlanet / Bracelet Seamaster Planet Ocean 43.5 mm Stainless Steel Blue Automatic 8605 600 m 2013–2016
Omega 232.32.44.22.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Stainless Steel / Black / Rubber Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8605 600 m 2014–2016
Omega 232.32.44.22.01.002 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Stainless Steel / Orange Numerals / Rubber Seamaster Planet Ocean 43.5 mm Stainless Steel Black Automatic 8605 600 m 2014–2016
Omega 232.32.44.22.03.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Stainless Steel / GoodPlanet / Rubber Seamaster Planet Ocean 43.5 mm Stainless Steel Blue Automatic 8605 600 m 2013
Omega 232.63.44.22.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Red Gold / Ceragold / Alligator Seamaster Planet Ocean 43.5 mm Red Gold Black Automatic 8615 600 m 2014–2016
Omega 232.90.44.22.03.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Titanium / Blue / Bracelet Seamaster Planet Ocean 43.5 mm Titanium Blue Automatic 8605 600 m 2014–2016
Omega 232.92.44.22.03.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Titanium / Blue / Rubber Seamaster Planet Ocean 43.5 mm Titanium Blue Automatic 8605 600 m 2014–2016
Omega 232.93.44.22.99.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Platinum / Orange / Alligator Seamaster Planet Ocean 43.5 mm Platinum Grey Automatic 8615 600 m 2014–2016
Omega 232.98.44.22.01.001 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Platinum / Diamond / Black / Alligator Seamaster Planet Ocean 43.5 mm Platinum Black Automatic 8615 600 m 2014–2016
Omega 232.98.44.22.01.003 Seamaster Planet Ocean 600M Co-Axial 43.5 GMT Platinum / Diamond / Qatar Seamaster Planet Ocean 43.5 mm Platinum Black Automatic 8615 600 m 2011
Omega 233.20.41.21.01.001 Seamaster 300 Master Co-Axial Stainless Steel / Sedna Gold / Black / Bracelet Seamaster 300 41 mm Sedna Gold, Stainless Steel Black Automatic 8400 300 m 2014–2021
Omega 233.20.41.21.01.002 Seamaster 300 Master Co-Axial Stainless Steel / Yellow Gold / Black / Bracelet Seamaster 300 41 mm Yellow Gold, Stainless Steel Black Automatic 8400 300 m 2014–2021
Omega 233.22.41.21.01.001 Seamaster 300 Master Co-Axial Steel Stainless Steel / Yellow Gold / Black / Strap Seamaster 300 41 mm Yellow Gold, Stainless Steel Black Automatic 8400 300 m 2015–2021
Omega 233.22.41.21.01.002 Seamaster 300 Master Co-Axial Steel Stainless Steel / Sedna Gold / Strap Seamaster 300 41 mm Sedna Gold, Stainless Steel Black Automatic 8400 300 m 2015–2021
Omega 233.30.41.21.01.001 Seamaster 300 Master Co-Axial Stainless Steel / Black / Bracelet Seamaster 300 41 mm Stainless Steel Black Automatic 8400 300 m 2014–2021
Omega 233.32.41.21.01.002 Seamaster 300 Master Co-Axial Stainless Steel / Black / Strap Seamaster 300 41 mm Stainless Steel Black Automatic 8400 300 m 2015–2021
Omega 233.60.41.21.01.001 Seamaster 300 Master Co-Axial Sedna Gold / Black / Bracelet Seamaster 300 41 mm Sedna Gold Black Automatic 8401 300 m 2014–2021
Omega 233.60.41.21.01.002 Seamaster 300 Master Co-Axial Yellow Gold / Black / Bracelet Seamaster 300 41 mm Yellow Gold Black Automatic 8401 300 m 2014–2021
Omega 233.60.41.21.03.001 Seamaster 300 Master Co-Axial Titanium / Sedna Gold / Blue / Bracelet Seamaster 300 41 mm Titanium, Sedna Gold Blue Automatic 8400 300 m 2014–2021
Omega 233.62.41.21.01.001 Seamaster 300 Master Co-Axial Yellow Gold / Black / Strap Seamaster 300 41 mm Yellow Gold Black Automatic 8401 300 m 2015–2021
Omega 233.62.41.21.01.002 Seamaster 300 Master Co-Axial Sedna Gold / Black / Strap Seamaster 300 41 mm Sedna Gold Black Automatic 8401 300 m 2015–2021
Omega 233.62.41.21.03.001 Seamaster 300 Master Co-Axial Titanium / Sedna Gold / Blue / Strap Seamaster 300 41 mm Titanium, Sedna Gold Blue Automatic 8400 300 m 2015–2021
Omega 233.90.41.21.03.001 Seamaster 300 Master Co-Axial Titanium / Blue / Bracelet Seamaster 300 41 mm Titanium Blue Automatic 8400 300 m 2014–2021
Omega 233.90.41.21.03.002 Seamaster 300 Master Co-Axial Platinum / Blue / Bracelet Seamaster 300 41 mm Platinum Blue Automatic 8401 300 m 2014–2021
Omega 233.92.41.21.03.001 Seamaster 300 Master Co-Axial Titanium / Blue / Strap Seamaster 300 41 mm Titanium Blue Automatic 8400 300 m 2014–2021
Omega 2502.52.00 Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster / Bracelet Railmaster 42.2 mm Stainless Steel Black Automatic 2403 150 m 2003–2010
Omega 2512.52.00 Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Bracelet Railmaster 42.2 mm Stainless Steel Black Automatic 3205 150 m 2003–2010
Omega 2512.53.00 Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Bracelet / China Explorer Red Railmaster 42.2 mm Stainless Steel Black Automatic 3313 150 m 2003–2010
Omega 2512.54.00 Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster Chronograph / Bracelet / China Explorer Yellow Railmaster 42.2 mm Stainless Steel Black Automatic 3313 150 m 2011
Omega 2802.52.31 Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster / Black Alligator Railmaster 42.2 mm Stainless Steel Black Automatic 2403 150 m 2003–2010
Omega 2802.52.37 Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster / Brown Alligator Railmaster 42.2 mm Stainless Steel Black Automatic 2403 150 m 2003–2010
Omega 2812.52.31 Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Black Alligator Railmaster 42.2 mm Stainless Steel Black Automatic 3205 150 m 2003–2010
Omega 2812.52.37 Seamaster Aqua Terra 150M Automatic 42.2 Railmaster Chronograph / Brown Alligator Railmaster 42.2 mm Stainless Steel Black Automatic 3205 150 m 2003–2010
Omega 2812.53.81 Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster Chronograph / China Explorer Red Railmaster 42.2 mm Stainless Steel Black Automatic 3313 150 m 2011
Omega 2812.54.82 Seamaster Aqua Terra 150M Co-Axial 42.2 Railmaster Chronograph / China Explorer Yellow Railmaster 42.2 mm Stainless Steel Black Automatic 3313 150 m 2011
Omega 304.23.44.52.06.001 Speedmaster Moonphase Chronograph Master Chronometer Stainless Steel / Yellow Gold / Silver Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Yellow Gold, Stainless Steel Silver Automatic 9904 100 m 2016
Omega 304.23.44.52.13.001 Speedmaster Moonphase Chronograph Master Chronometer Stainless Steel / Sedna Gold / Brown Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Sedna Gold, Stainless Steel Brown Automatic 9904 100 m 2016
Omega 304.30.44.52.01.001 Speedmaster Moonphase Chronograph Master Chronometer Stainless Steel / Black / Bracelet Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Stainless Steel Black Automatic 9904 100 m 2016
Omega 304.32.44.51.01.001 Speedmaster Moonwatch Master Co-Axial Stainless Steel / Racing Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Black Automatic 9900 100 m 2017
Omega 304.33.44.52.01.001 Speedmaster Moonphase Chronograph Master Chronometer Stainless Steel / Black Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Stainless Steel Black Automatic 9904 100 m 2016
Omega 304.33.44.52.03.001 Speedmaster Moonphase Chronograph Master Chronometer Stainless Steel / Blue / Alligator Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Stainless Steel Blue Automatic 9904 100 m 2016
Omega 304.63.44.52.01.001 Speedmaster Moonphase Chronograph Master Chronometer Sedna Gold / Black Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Sedna Gold Black Automatic 9905 100 m 2016
Omega 304.63.44.52.02.001 Speedmaster Moonphase Chronograph Master Chronometer Yellow Gold / Silver Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Yellow Gold Silver Automatic 9905 100 m 2016
Omega 304.93.44.52.99.001 Speedmaster Moonphase Chronograph Master Chronometer Platinum / Silver Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Platinum Silver Automatic 9905 100 m 2016
Omega 304.93.44.52.99.002 Speedmaster Moonphase Chronograph Master Chronometer Platinum / Silver / Ruby Speedmaster (Non-Moonwatch) 44.25 mm Platinum Silver Automatic 9905 100 m 2019
Omega 304.93.44.52.99.003 Speedmaster Moonphase Chronograph Master Chronometer Platinum / Silver / Emerald Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Platinum Silver Automatic 9905 100 m 2019
Omega 304.93.44.52.99.004 Speedmaster Moonphase Chronograph Master Chronometer Platinum / Silver / Diamond Speedmaster (Non-Moonwatch) 44.25 mm Ceramic, Platinum Silver Automatic 9905 100 m 2019
Omega 311.30.44.50.01.002 Speedmaster Professional Moonwatch Co-Axial Stainless Steel / Black / Bracelet Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Black Automatic 3313 100 m 2008–2013
Omega 311.30.44.51.01.001 Speedmaster Moonwatch Co-Axial Split-Seconds Stainless Steel / Grey / Bracelet Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Grey Automatic 3612 100 m 2010–2011
Omega 311.30.44.51.01.002 Speedmaster Moonwatch Co-Axial Stainless Steel / Black / Bracelet Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Black Automatic 9300 100 m 2011–2017
Omega 311.30.44.51.04.001 Speedmaster Moonwatch Co-Axial Stainless Steel / White / Bracelet Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Black Automatic 9300 100 m
Omega 311.33.44.32.01.001 Speedmaster Professional Moonphase Aventurine / Strap Speedmaster Moonwatch 44.25 mm Stainless Steel Black Manual Winding 1866 50 m 2012–2014
Omega 311.33.44.51.01.001 Speedmaster Moonwatch Co-Axial Stainless Steel / Black Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Black Automatic 9300 100 m 2011–2017
Omega 311.33.44.51.04.001 Speedmaster Moonwatch Co-Axial Stainless Steel / White Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Black Automatic 9300 100 m
Omega 311.33.44.51.04.002 Speedmaster Moonwatch Co-Axial Stainless Steel / White Speedmaster (Non-Moonwatch) 44.25 mm Stainless Steel Black Automatic 9300 100 m
Omega 311.63.44.51.01.001 Speedmaster Moonwatch Co-Axial Orange Gold / Black Speedmaster (Non-Moonwatch) 44.25 mm Orange Gold Black Automatic 9301 100 m 2011
Omega 311.63.44.51.04.001 Speedmaster Moonwatch Co-Axial Orange Gold / White Speedmaster (Non-Moonwatch) 44.25 mm Orange Gold White Automatic 9301 100 m